#对象的布尔值
print(bool(False))
print(bool(0))
print(bool(0.0))
print(bool(None))
print(bool(''))
print(bool(""))
print(bool([]))
print(bool(()))
list()==[]
tuple()==()
print(bool(dict()))
print(bool(set()))
#除了以上运算，其余布尔运算的结果都为Ture